W0714己内酰胺薄膜蒸发器下料管管壁腐蚀减薄失效分析

中国腐蚀与防护学报

2011, Vol. 31

Issue (6): 488-492

失效分析

本期目录 | 过刊浏览

W0714己内酰胺薄膜蒸发器下料管管壁腐蚀减薄失效分析

杨根柱¹,李庆华¹,刘国帅¹,王博¹,刘杰¹,熊金平²,何少平³,陆正良⁴

1. 中国石油化工股份有限公司石家庄炼化分公司石家庄 050032
2. 北京化工大学碳纤维及功能高分子教育部重点实验室北京 100029
3. 北京市燃气集团有限责任公司北京100011
4.钢铁研究总院北京 100081

CORROSION OF TREMIE PIPE OF W0714 FILM EVAPORATOR OF HEXANOLACTAM

YANG Genzhu¹, LI Qinghua¹, LIU Guoshuai¹, WANG Bo¹, LIU Jie¹, XIONG Jinping², HE Shaoping³, LU Zhengliang⁴

1. Shijiazhuang Refining Branch, China Petrochemical Co. Ltd., Shijiazhuang 050032
2. Key Laboratory of Carbon Fiber and Functional Polyners of Ministry of Education, Beijing University of Chemical Technology, Beijing 100029
3. Beijing Gas Group Co., Ltd., Beijing 100011
4. Central Iron & Steel Research Insititute, Beijing 100081

全文: PDF(2064 KB)

摘要: 用化学方法、金相显微镜和扫描电镜等对腐蚀减薄失效后的W0714己内酰胺薄膜蒸发器下料管管壁进行了分析，结果表明：此设备用304L不锈钢管壁在非氧化性介质中发生了非敏化态的晶间腐蚀，其腐蚀失效的原因是过钝化电位范围内的电化学溶解所致。

关键词 ：薄膜蒸发器, 不锈钢管, 腐蚀失效

Abstract：Corrosion mechanism of Tremie pipe of W0714 film evaporator of hexanolactam was investigated by chemical method, optical microscope and SEM etc.. the results showed that the non-sensitive intergranular corrosion took place on the Tremie pipe in the non-oxidizability medium. the potential of 304L SS in the medium was located at the transpassivation region, which resulted in the corrosion of the Tremie pipe.

Key words： film evaporator stainless steel pipe corrosion failure

收稿日期: 2010-09-03

ZTFLH:

TG172

通讯作者: 熊金平 E-mail: xiongjp@mail.but.edu.cn

Corresponding author: XIONG Jinping E-mail: xiongjp@mail.but.edu.cn

作者简介: 杨根柱，男，1966年生，硕士，高级工程师，研究方向为石油化工设备和工程管理

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引用本文:

杨根柱,李庆华,刘国帅,王博,刘杰,熊金平,何少平,陆正良. W0714己内酰胺薄膜蒸发器下料管管壁腐蚀减薄失效分析[J]. 中国腐蚀与防护学报, 2011, 31(6): 488-492.
LI Qiang-Hua, YANG Gen-Zhu, YU Bo, XIONG Jin-Beng. CORROSION OF TREMIE PIPE OF W0714 FILM EVAPORATOR OF HEXANOLACTAM. J Chin Soc Corr Pro, 2011, 31(6): 488-492.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I6/488

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